Cryptosporidiosis has not been previously reported in black bears in North
America, either free-roaming or captive. However, oocysts have been documen
ted in two captive Malayan sun bears (Helarctos malayanus) located in zoolo
gical parks in Taiwan. Developmental stages of Cryptosporidium parvum were
observed in tissue sections from the small intestine of a black bear cub fo
und dead in Virginia (USA).